/*
	This file is part of Warzone 2100.
	Copyright (C) 1999-2004  Eidos Interactive
	Copyright (C) 2005-2007  Warzone Resurrection Project

	Warzone 2100 is free software; you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation; either version 2 of the License, or
	(at your option) any later version.

	Warzone 2100 is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with Warzone 2100; if not, write to the Free Software
	Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/

#ifndef __INCLUDED_SRC_WARCAM_H__
#define __INCLUDED_SRC_WARCAM_H__

#include "lib/ivis_common/pietypes.h"
#include "objectdef.h"

#define X_UPDATE 0x1
#define Y_UPDATE 0x2
#define Z_UPDATE 0x4

#define CAM_X_AND_Y	(X_UPDATE + Y_UPDATE)

#define CAM_ALL (X_UPDATE + Y_UPDATE + Z_UPDATE)

#define ACCEL_CONSTANT 12.0f
#define VELOCITY_CONSTANT 4.0f
#define ROT_ACCEL_CONSTANT 4.0f
#define ROT_VELOCITY_CONSTANT 2.5f

#define CAM_X_SHIFT	((VISIBLE_XTILES/2)*128)
#define CAM_Z_SHIFT	((VISIBLE_YTILES/2)*128)

/* The different tracking states */
enum
{
CAM_INACTIVE,
CAM_REQUEST,
CAM_TRACKING,
CAM_RESET,
CAM_TRACK_OBJECT,
CAM_TRACK_LOCATION
};

/* Storage for old viewnagles etc */
typedef struct _warcam
{
UDWORD	status;
UDWORD	trackClass;
UDWORD	lastUpdate;
iView	oldView;

Vector3f	acceleration;
Vector3f	velocity;
Vector3f	position;

Vector3f	rotation;
Vector3f	rotVel;
Vector3f	rotAccel;

UDWORD	oldDistance;
BASE_OBJECT *target;
}WARCAM;

/* Externally referenced functions */
extern void	initWarCam			( void );
extern void	setWarCamActive		( BOOL status );
extern BOOL	getWarCamStatus		( void );
extern void camToggleStatus		( void );
extern BOOL processWarCam		( void );
extern void	camToggleInfo		( void );
extern void	requestRadarTrack	( SDWORD x, SDWORD y );
extern BOOL	getRadarTrackingStatus( void );
extern void	toggleRadarAllignment( void );
extern void	camInformOfRotation ( Vector3i *rotation );
extern BASE_OBJECT *camFindDroidTarget(void);
extern DROID *getTrackingDroid( void );
extern SDWORD	getPresAngle( void );
extern UDWORD	getNumDroidsSelected( void );
extern void	camAllignWithTarget(BASE_OBJECT *psTarget);

#endif // __INCLUDED_SRC_WARCAM_H__
